Wringer



July 12, 1938. w. L. KAUFFMAN 2D 2,123,850

WRINGER Filed July 19, 1934 3 Sheets-Sheet l July 12, 1938. w. L. KAUFFMAN, 2D

WRINGER Filed July 19, 1954 5 Sheets-Sheet 2 ZZ INVENToR.

BY VZW ATTORNEYS.

Patented July 12, 1938 I UNITED STATES PATENT OFFICE Application July 19, 1934, semi No. '136,007r

. 11 Claims.

.Heretofore it has been proposed to provide power wringers with means for breaking the driving connection to the rolls so arranged that it may be readily accomplished and act as a safety device, Some of such mechanisms 'have been arranged to operate in connection with asafety 'pressure relief device so that as a safety means ythere would be not only a release of pressure, but a, stoppage of the rolls.

The present invention is designed to improve and simplify the mechanism for breaking the driving connection, preferably in connection with aA safety release which relieves the pressure on the rolls.

In carrying out the invention I provide a means breaking the driving connection with a change In the pressure thrust on one of the rolls, ordinarily the lower drive roll. This provides a very positive mechanism for the purposeand one that may be readily housed and arranged in the frame.

Features and details of the invention will appear from the .specification and claims.l

Preferred embodiments of the invention are exemplified in the drawings as follows:.

Fig. 1 shows a central longitudinal section of a wringer with the invention lnplace therein.

Fig. 2 an enlarged sectional view of the connecting clutch with the clutch disengaged.

Fig. `3 a similar view. partly in section, with the clutch in engaged position.

Fig. 4 a perspective view oi a lclutch fitting.

Fig. 5 a section on the line 5-5 in Fig..1.

Fig. 6 a section `onthe line 8 8 in Fig. 1.

Fig. 7 an end view of one of the bottom bearing blocks.

Fig, 8 an enlargedsectional view of a modication of the clutch mechanism with the clutch in engagement.

Fig. 9 a similar view with the clutch released. 40 Fig. 10 a detached view of a clutch fitting in perspective. l

Fig. 11 an end view of one of the clutch fittings. Fig. l2 an end view of a companion clutch fitting. 45 Fig. 13 a top view of one lof the bottom bearing blocks.

' Fig. 14 an enlarged sec'tion of a modified clutch mechanism with the clutch in engaged position.

Fig. 15 a similar view with the clutch in dis- 50 engaged position.

Fig.- 16 a section on the line I6-I6 in Fig. 14. Fig. 17 a side view of the bottom bearing block. In the construction shown in Figs. 1 to 7, I marks the base of the frame, 2 one of the side lil ' 55 stilel. I the side stile at the driving aide of the wringer. 4 the top bar, 5 the bottom roll, Sthe upper roll, 1 the lower bearing at the end of the bottom roll away from the driving end, and 8 the' bearing block for the upper roll at the same end of the wringer. 9 represents the drive shaft which is driven from a gear box III in the usual manner. The shaft 9 is provided with a cross 'pin II, the ends of which extend into slots I2 in a drive sleeve I3. The drive sleeve I3 has a slot v I4 and a cross pin I5 operates in this slot, the cross pin being arranged in a shank i6 of a clutch fitting I1. 'I'he clutch fitting is provided with clutch detentsi which are adapted to engage a cross pin I9 in the lower roll shaft 5a. The fitting I1 has a central vbore 20 adapted to lreceive the end of the shaft 5a. and a spring 2i is arranged in this bore between the base of the bore and th`e end of the shaft 5a and tends to move the fitting out of engagement with the pin I9. The fitting I1 has a conical outer surface I1a and this operates in a conical bearing surface 23 in the bearing block 22. The roll 6 at the power end of the wringer has a sliding bearing block 24 and a pressure spring 25 operates on the bearing blocks 8 and 24. A pressure pin 26 has a connection with the spring and extends into a release sleeve 21. The release sleeve extends through an opening 28 in a release fitting 428a secured on the top bar. The fitting 28a has radial slots 29 which are adapted to receive stop shoulders 30 on the sleeve. Cam surfaces 3| are arranged on the bottom of the fitting 28a and l the sleeve is provided with a handle 32. When the sleeve is turned by means'of the handle, the shoulder 3i) is moved off' the flat between the cams 3| and as the sleeve swings the shoulders 30 reach the slots 29 and allow the sleeve to move outwardly and thus release pressure on' the spring. This mechanism in function corresponds to the reissue patent to Misner, No. 15,865.

The top bar at the power end of the cylinder is provided with a latch 33 which is pivotally mounted on the top bar by means of a pin 34. The latch has hooks which engage notches 36 in the face of the side stile. The opposite end of the wringer has a similar latch 31 mounted on a pin 39 and this latch engages in a notch 2a. in the side stile. The upper end of the latch has an extension 39 limiting its movement.

When the spring 25 is released by the operation 50 of the release mechanism the up-throw of.. the spring strikes'the latches 33 and 31 at the crosswmember of the latch as 33a and' releases the latches, thus releasing tle` top bar. This retarded release of the top bar is found in the i. schuda Patent No. 1.709.098. 5

- 2), thus disengaging the detents Il from the pin I l and breaking the driving 'connection so that the lower roll is immediately stopped. When pressure is again exerted on -the bottom roll through a re-setting of the wringer, the downward pressure on the shaft 5a which is communicated to the fitting I1 urges this fitting downwardly and it through its camming action on the cone surfaces moves the fitting toward the left re-engaging the fitting I1 with the shaft la and thus placing the wringer in operative position. This action of the fitting is more readily accomplished because as soon as the power rotates this fitting a very slight camming action tends to force it sidewise so as to set the clutch. The side thrust on the shaft Ba, due to the camming action of the fitting, is received by the end 5b of the shaft 5a against the outer wall of the stile 2.

It will be noted' that this mechanism is very rugged, can be readily housed in the side stile, and the thrust force is ample to engage the clutch and maintain the engagement and it also responds without any complicated mechanism to the release of pressure as where a safety release is operated. The sleeve I3 permits the slight lifting of the tting as it is released.

In the modification shown in Figs. 8 to 13, the wringerrolls with the several parts thereof including the top bar, release device and bearings, except the one bearing at the power shaft, are

similar to the modification shown in Fig. 1 and have the same driving shaft, sleeve and connection.

A fitting 40 has an extension 4I with a cross pin 42 which engages the slot Il in the drive sleeve I3. The fitting 40 has a conical rear surface 4I and this operates in a conical surface Il in a bearing block 45. 'I'he fitting 40 has a 'detent clutch end 46, clearly shown in Fig. 10. 'I'he end of the shaft 5a extends into a socket l1 in the fitting 40.

A companion tting 4I is slidingly mounted on the shaft 5a and is provided with slots Il which are adapted to engage with the cross pin I9 and has a detent end which is adapted to engage the detent end 46. The fitting ll has a conical rear surface 5I which operates in a conical surface l2 in the bearing 4I being opposed to the conical surface 4I., An annular spring washer 53 curved cylindrically with the axis of the cylindrical surface extending crosswise of the axis of the washer is arranged within a socket Il inthe fitting 40 and tends to crowd the fittings 4l and 48 apart so as to disengage the detent ends thereof. When the pressure is on the lower roll this thrust exerted onv the cone bearing surfaces of the fittings 4D and 4I forces them together and the detent surfaces into engagement and so long as the pressure remains the clutch vremains engaged. When pressure is released the spring washer 53 forces the fittings apart and disengages the clutch. In this structure the end thrusts, due to the camming action, are neutralized.

In Figs. 14 to 17 a further modification is shown in the clutch mechanism. Here a fitting 55 is provided with an extension 5B having a cross pin 51 engaging the connecting sleeve I3.

' The fitting has a socket 5l which receives the guasto in the socket Il and exerts side thrust between the fitting and the shaft la. 'Ihe fitting operates in a bearing groove 0I in a bearing block M6. The block rests on a support I2 in the side stile. 'I'he power side of the block is cut away at permitting the block to rock on the corner 0I. The front face.l of the block is vprovided with a wearing plate l5 which engagesa flange i on the fitting 55. When pressure is exerted on the shaft 5a its thrust forces the bearing block downwardly into the position shown in Fig. 14, the block rocking on the corner il and this moves the upper inner face of the block to the left carrying n with it, through 4its action on the flange the fitting 55, thus moving the notched end of the fitting 5l into engagement with the cross pin and completing the driving connection. Whenthe shaft 5a is relieved of pressure the spring Il moves the fitting 55 to the left, rocking the block Bla and at the same time breaks the connection with the roll shaft. In this structure the same release mechanisms and other features shown in Fig. l may be used and when the release device is operated, thus taking the pressure oil.' the lower roll the driving connection is broken and when the wringer is re-set and pressure exerted on the lower roll the clutch is re-set and the wringer is ready for operation without further attention by the operator.

It will be observed that in each of the structures the driving elements are so inclined that if the pressure is taken off the rolls the driving torque itself will break the connection. Thus in the structure shown in Figs. 1 to 7 the sides of the teeth I8 are slightly inclined so that the y torque action on the pin I! is sufficient to break the connection. v

The same condition exists in the structure shown in Figs. 8 to 10. The driving clutch faces on the clutch end 46 are inclined so that operating on the pins Il the clutch is disengaged by the torque action when the pressure is released.

In the same manner the walls of the driving notch N in the structure shown in Fig. 14 operating on the pin I9 are such as to assure a breaking of the clutch connection through the torque action. In all of these cases an added spring is preferable as giving a more definite release.

What I claim as new is:-

1. In a wringer, the combination of a frame; rolls mounted; in the frame; driving means; a pressure means for the rolls; a clutch between the driving means and one of the rolls: devices responsive to pressure differences on the rolls for yactuating the clutch to release the clutch with vdriving means; a clutch connection between the driving means and one of the rolls comprising companion fittings. each having cone surfaces and opposing surfaces, one fitting being locked with the roll and the other with the driving which the fittings operate, said cam surface actuating the fittings in response to and release of pressure to control the clutch surfaces.

3. In a wringer. the combination of a wringer frame; rolls having roll shafts Lmounted in the frame; a pressure device for therolls; a driving means: a driving connection between the means and one of the rolls; and a tilting bear- A means; and a double cam bearing surface on ing for one of the shafts, said bearing having a 75 frame support offset from a point of engagement by the shaft and adapted -to tilt in response to a change of pressure on the shaft and through the tilting to move the connection axially under pressure to control the engagement of the driving connection.

4. In a wringer, the combination of a frame; rolls having roll shafts mounted in the frame; a pressure device for exerting and releasing pressure on the rolls; a driving means; a driving connection between the driving means and one of the rolls; and a tilting bearing receiving the pressure thrust of a roll having a frame support offset from a point of engagement of the shaft with the bearing and tilting under such thrust and release thereof and adapted to control the driving connection as it is tilted.

5. In a wringer, the combination of a frame; rolls mounted in the frame; driving means for one of the rolls; pressure means applying pressure to the rolls; a shaft for one of the rolls extending beyond the end of the roll; a bearing receiving the outer periphery of the shaft sustaining the thrust of the pressure means on the rolls; means responding to pressure communicated from the shaft to the bearing controlling the driving means; and a device for relieving pressure on the rolls.

6. In a, wringer, the combination of a frame; rolls mounted in the frame; pressure means for the rolls; a bearing for one of the rolls subjected to pressure from the pressure means; a driving means for one of the rolls; a driving connection leading from the driving means to the roll driven thereby; mechanism comprising cam surfaces subjected to the roll pressure, said cam surfaces being inclined to the direction of thrust and through the camming action of the cam adapted to actuate the connection in response to a difference in pressure on the bearing; and devices releasing the pressure of the pressure means. d

7. In a, wringer, the combination of a frame; rolls mounted in the frame; a pressure device for the rolls; a safety release device for releasing pressure on the rolls; a driving means for one of the rolls; a bearing block for one of the rolls subjected to pressure from the pressure means and having a cam surface inclined to the direction of pressure -on the rolls; a bearing fitting supported on the cam bearing surface and tending to move axially under said pressure; and a clutch setting and releasing the driving means actuated by the tting through its camming action on its bearing surface in response to pressure differences exerted on the bearing block from the pressure device.

8. In a wringer, the combination of a frame; wringer rolls mounted in the frame; a pressure device exerting pressure on the rolls; a driving means for one of the rolls; a fitting receiving pressure thrust on one of the rolls from the pressure device; a cam surface on which the fitting operates; said cam surface being inclined to move the fitting axially under pressure from the roll; a clutch actuated by the tting through the camming action in response to'pressure difierences on the fitting; and means for releasing the pressure of the pressure device.

9. In a wringer,v the combination of a frame; rolls mounted in the frame; a pressure device exerting pressure on the rolls; a driving means; a clutch connection between the driving means and one of the rolls comprising companion fittings, each having cone surfaces and opposing surfaces, one tting being locked with the roll and the other with the driving `means; and a double cam bearing surface on which the fittings operate, said cam surface actuating the fittings under pressure to set thevclutch as pressure is exerted and to release the same as pressure is released; and means for releasingthe pressure of the pressure device.

' 10. In a wringer, the combination of a wringer frame; rolls having roll shafts mounted in the frame; a' pressure device for the rolls; a, driving means; a driving connection between the means and one of the rolls; and a tilting bearing for one ofthe shafts, said bearing having a frame support offset from a point of engagement by the shaft and adapted to tilt in` response to a change of pressure on the shaft, and through the tilting to move the connection axially under pressure to set the connection in driving engagement under pressure as pressure is exerted, and

to release the engagement as pressure is released; and a release device releasing the pressure of the pressure device.

11. A roll ywringer mechanism including a frame, a pair of rolls therein adapted to be pressed together; means for pressing the rolls together and releasing the pressure; a clutch mechanism having a driven element and a clutch element capable of connecting said driven element and an associated roll, and means setting said clutch in response to normal roll pressure on the rolls and releasing said clutch on a release of the roll pressure.

WALTER L. KAUFFMAN II. 

